Hockey puck b rests on a smooth ice surface and is struck by a second puck a, which has the same mass. puck a is initially traveling at 16.0 m/s and is deflected 21.0 ∘ from its initial direction. assume that the collision is perfectly elastic.
a) find the final speed of the puck bafter the collision.
b) find the final speed of the puck aafter the collision.
c) find the direction of b's velocity after the collision.